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    <p>3<sup>2</sup>+4<sup>2</sup>=5<sup>2</sup></p>   <!--32+42=52-->

    <marquee direction="up" behavior="slide"><img src="D:\素材\天使.gif" alt="天使" width="200px" height="180px" /></marquee>

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		<dt>C#</dt>
		<dd>很好的内容</dd>
		<dd>基础课</dd>
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